Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
  • A61M11/02—Sprayers or atomisers specially adapted for therapeutic purposes operated by air or other gas pressure applied to the liquid or other product to be sprayed or atomised
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M15/00—Inhalators
  • A61M15/0028—Inhalators using prepacked dosages, one for each application, e.g. capsules to be perforated or broken-up
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/06—Gas or vapour producing the flow, e.g. from a compressible bulb or air pump
  • B05B11/062—Gas or vapour producing the flow, e.g. from a compressible bulb or air pump designed for spraying particulate material
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M2202/00—Special media to be introduced, removed or treated
  • A61M2202/06—Solids
  • A61M2202/064—Powder
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M2205/00—General characteristics of the apparatus
  • A61M2205/07—General characteristics of the apparatus having air pumping means
  • A61M2205/071—General characteristics of the apparatus having air pumping means hand operated
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1042—Components or details
  • B05B11/1052—Actuation means
  • B05B11/1053—Actuation means combined with means, other than pressure, for automatically opening a valve during actuation; combined with means for automatically removing closures or covers from the discharge nozzle during actuation

Definitions

• the present invention relates to a device for dispensing a fluid or pulverulent product, and more particularly a device for unitarily dispensing a dose of product contained in a reservoir using a pressurized air flow.
• Document WO 99/46055 discloses such a device in which a spherical closure element, which closes the outlet of the tank, is expelled by the air flow created by an air cricket.
• the air pressure necessary to actuate the device must be high enough to guarantee the complete distribution of the dose, as well as its fractionation if necessary.
• the air pressure necessary to actuate the device is determined by the resistance given by the ball to be expelled. This resistance is relatively difficult to control and to predetermine since it is dependent on the friction between the ball and its cylindrical seat in which it is fitted to seal said tank.
• the object of the present invention is to provide a device for dispensing a fluid or pulverulent product which does not reproduce the abovementioned drawbacks.
• the object of the present invention is therefore to provide a device for dispensing a fluid or pulverulent product, in which the expulsion of the closing element which seals the reservoir in a sealed manner is independent of the air pressure supplied by the flushing of the tank. 'air.
• the present invention also aims to provide a device for dispensing a fluid or pulverulent product of the aforementioned type, which is simple and inexpensive to manufacture and assemble.
• the present invention also aims to provide such a device for dispensing a fluid or pulverulent product which allows the use of a very simple and inexpensive flushing, and not requiring the creation of an air flow. particularly powerful.
• Another object of the present invention is to provide such a device for dispensing a fluid or pulverulent product which guarantees the total distribution of the dose of product, as well as its fractionation, if this is required.
• the present therefore therefore relates to a device for dispensing a fluid or pulverulent product comprising a dispensing outlet, an air flush to generate an air flow when the device is actuated, and at least one reservoir containing a single dose.
• said tank comprising an air inlet connected to said air flush and a product outlet connected to said dispensing outlet, said air inlet comprising a product retaining member for holding the product in the tank up to '' when dispensing the product, and said product outlet being closed by a closure element, characterized in that the closure element is a spherical element, such as a ball, force fitted into the product outlet from the reservoir , said device comprising a mechanical opening system cooperating with said closing element to mechanically expel it from its closed position during actuation of the device.
• the closure element is a spherical element, such as a ball, force-fitted into the product outlet from the reservoir.
• said product retaining member is sealed to the product and airtight, before actuation of the device.
• said product retaining member is impermeable to the product and permeable to air before actuation of the device.
• said product retaining member is a membrane which is pierced by said mechanical opening system when the device is actuated.
• said mechanical opening system comprises a movable rod adapted to pass through said reservoir during actuation of said device to expel said closure element.
• said rod comprises a first part of rod integral with said air flush and a second part of rod, fixed to said first part of rod, and intended to pierce said membrane and to pass through said reservoir to expel said closure element.
• said first part of the rod comprises at least one external groove for the passage of air, extending axially or helically on said rod.
• said mechanical opening system is integral with said product retaining member.
• the product retaining member is a plate which extends into the reservoir in the direction of the closure element by a first rod, preferably conical, the end of which cooperates with the closure element.
• said air flush comprises a second rod which cooperates with said retaining member to move it together with the first rod when the device is actuated.
• said second rod has at least one external air passage groove.
• the product retaining member comprises one or more air passage grooves.
• the reservoir comprises a powder reservoir and a liquid reservoir
• the product retaining member comprises a first retaining member, which at rest separates the two reservoirs, and a second retaining member
• the mechanical opening system comprising a rod interconnecting said two retaining members so that during the displacement of the rod, the liquid is first transferred into the powder reservoir for mix there with the powder
• the closing element being mechanically expelled at the end of the rod travel by said first retaining member
• air passage means being open to connect the air flush to the powder reservoir to produce the expulsion of the powder / liquid mixture through the product outlet.
• said mechanical opening system forms a guide for manual actuation of the air flush.
• said air flush comprises a piston sliding in an air chamber.
• said air flush comprises a bellows.
• FIG. 1 is a schematic cross-sectional view of a fluid or powder product dispensing device according to a first embodiment of the invention, in the rest position;
• Figure 2 is a view similar to that of Figure 1, in the actuating position;
• FIG. 3 is a schematic cross-sectional view showing a variant of the first embodiment of Figures 1 and 2, in the rest position;
• - Figure 5 is a schematic cross-sectional view of a device for dispensing a fluid or powder product according to a second embodiment of the present invention, in the rest position; and - Figures 6, 7 and 8 are schematic cross-sectional views of a third embodiment of the invention, respectively in the rest position, in the position after mixing and in the dispensing position.
• the present invention in its various variants and embodiments described below, relates more particularly to a device of the type of that disclosed in document WO 99/46055. This document is therefore incorporated here by way of reference with regard to the general operation of the device, and more particularly the spherical closure element disposed at the outlet of the reservoir. Only the elements constituting the present invention will therefore be described in detail below.
• the present invention is not limited to this type of device, but is on the contrary applicable to all types of devices for dispensing fluid and pulverulent products comprising a reservoir closed by a spherical closure element, the content of the tank to be expelled by an air flow.
• the device comprises a tank 30 comprising an air inlet 31 and a product outlet 32.
• the air inlet 31 of the tank is connected to an air flush 20 and the product outlet 32 of the tank is connected to a distribution outlet 10 of the device.
• the product outlet 32 is closed by a spherical closure element 50, such as a ball, which is force-fitted into said product outlet 32.
• the air inlet 31 is provided with a product retaining member 40 which is adapted to maintain the product in the reservoir before actuation of the device.
• the air flush 20 is actuated manually by the user and is adapted to create an air flow which will pass through the reservoir 30 to bring the product which it contains in the direction of the dispensing outlet 10.
• the device comprises a mechanical opening system 60, which is preferably integral with the air flush 20, that is to say that it is actuated simultaneously with the actuation of said air flush 20, and which is adapted to cooperate with said closure element 50 to mechanically expel it from its closed position when the device is actuated.
• a mechanical opening system 60 which is preferably integral with the air flush 20, that is to say that it is actuated simultaneously with the actuation of said air flush 20, and which is adapted to cooperate with said closure element 50 to mechanically expel it from its closed position when the device is actuated.
• the mechanical opening system 60 comprises a set of rod 61, 62, of which a first part of rod 61 is integral with the air flush 20, and a second part of rod 62, preferably of smaller diameter, is fixed to said first part of rod 61 and is adapted to pass through, in particular to pierce, the product retaining member 40, then to pass through the reservoir 30 until cooperating with the closing element 50 for mechanically expelling it from its closed position.
• the product retaining member 40 can advantageously be in the form of a membrane which is impermeable to the product but permeable to air. In this way, at the start of the actuation of the flush 20, the pressure increases both in the flush and in the tank 30, so that at the moment when the ball 50 is expelled by the second part of rod 62, the product contained in the reservoir 30 is sprayed finely in the direction of the dispensing outlet 10 of the device.
• the product retaining member 40 can also be produced in a product-tight and air-tight manner, before actuation of the device, the air pressure created by the flushing air not penetrating the inside the tank 30 only when said membrane 40 is pierced.
• the first part of the rod 61 comprises at least one external groove 63 for the passage of air adapted to transmit the flow of air when the ball 50 is expelled.
• This or these grooves may be straight, that is to say axial, or helical, in order to provide the fractionation of the powder which may possibly be required in order to achieve a fine spraying of the product, in particular if it is a question of a powder.
• the air flush shown in Figures 1 and 2 includes a piston 21 sliding in an air chamber 22, the piston 21 being manually actuated by the user.
• the presence of the rod, and in particular of the first part of rod 61 provides guidance for said piston 21, which facilitates its actuation, by imposing an axial displacement of said piston inside the chamber 22.
• FIGS. 3 and 4 an alternative embodiment of the device shown in FIGS. 1 and 2 is shown, in which the air flush is produced in the form of a bellows 25.
• the first part of rod 61 provides guidance for actuating said bellows 25, which makes it possible to produce said bellows 25 very simply, without having to provide complicated guide means, since the guidance is already obtained by said rod 61 disposed centrally inside said bellows.
• the product retaining member 40 is not intended to be pierced by the mechanical opening system 70, but on the contrary forms a part of it.
• said product retaining member 40 is advantageously produced in the form of a rigid disc which is extended inside the reservoir by a first rod 71 whose end 72 cooperates with the closing element 50.
• This first rod 71 is preferably made in a conical manner, or of an approximately similar shape, which allows on the one hand to provide sufficient space for the product contained in the reservoir, and on the other hand to guarantee a good diffusion of the air flow created by the flush 20 when the product is expelled.
• the product retaining member 40 is extended by a second rod 75 which is integral with the air flush 20.
• This second rod 75 is adapted to move the retaining member 40, and therefore the first rod 71, and therefore the closing element 50 during the actuation of the air flush 20.
• the displacement of the second rod 75 is carried out at the end of the actuation stroke of the air flush , in order to provide a flow of pressurized air when the ball 50 is expelled.
• the second rod 75 also has one or more external air passage grooves for transmitting the air flow to inside the tank 30 when the device is actuated.
• the product retaining member 40 can either be completely sealed against the product and air in its rest position, so that the air flow does not enter the interior of the tank 30 until the ball 50 is. expelled, or it may comprise one or more air passage grooves, which allow the air pressure to also rise inside the tank 30 at the start of the actuation of the flush 20, and until the expulsion of said ball 50.
• Such a rise in pressure in the reservoir before the expulsion of the product can also promote the fragmentation of the product, particularly when the product is a powder.
• the air flush 20 is a bellows 25, advantageously guided by the second rod 75, as explained above, but it is clear that any type of air flush is usable, and in particular the piston system shown in Figures 1 and 2.
• the present invention therefore provides a device for dispensing a fluid or pulverulent product in which it is possible to increase the interference between the ball and the product outlet 32 of the reservoir 30, which results in safer sealing, in particular regarding sealing.
• the most suitable materials can be chosen to make said ball and said seat provided at the product outlet 32 from the reservoir 30.
• the pressure can be easily adjusted when the product is dispensed, by simply modifying the length of the rod 61, 75 which cooperates with the flushing 20. The longer the rod, the sooner the ball 50 will be expelled in the stroke of actuation of the flush, and the less the air flow will be important when dispensing the product.
• the present invention also applies to the distribution of liquid products.
• a device comprising a reservoir 30 formed by a powder reservoir 35 and a fluid reservoir 36, these two products being intended to be mixed before being distributed.
• the reservoir 30 is separated at the level of a partition wall (37) which has an opening closed at rest by a first retaining member 45 which separates, preferably in leaktight manner, the powder reservoir 35 from the liquid reservoir 36.
• a second retaining member 46 is provided in the liquid reservoir 36.
• the upper reservoir is the powder reservoir 35 and the lower reservoir is the liquid reservoir, but it could be the reverse.
• the mechanical opening system 80 comprises a rod 81 which is preferably secured to the air flush (not shown).
• This rod first drives the two retaining members 45 and 46, so that the opening between the two reservoirs is released, and the liquid is transferred to the powder reservoir 35 by the action of the second retaining member forming a piston. in the liquid tank 36. In the position of Figure 7, all of the liquid has been transferred to the powder tank 35, in which the two materials mix.
• the second retaining member 46 then closes the retaining member for the powder / liquid mixture.
• the first retaining member 45 is disposed very close to the closing element 50.
• the rod 81 being integral with the air flush, the movement between Figures 6 and 7 creates air compression. Continuation of the thrust of the rod 81 from the position of FIG.
• the invention can also be applied to a multidose device comprising several individual reservoirs, means then being provided for making a reservoir cooperate respectively with the air flush and the mechanical opening system, each time the device is actuated.

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• Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• Anesthesiology (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Hematology (AREA)
• Veterinary Medicine (AREA)
• Public Health (AREA)
• General Health & Medical Sciences (AREA)
• Pulmonology (AREA)
• Bioinformatics & Cheminformatics (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Nozzles (AREA)
• Closures For Containers (AREA)
• Infusion, Injection, And Reservoir Apparatuses (AREA)

Applications Claiming Priority (3)

Publications (2)

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ID=8857422

Family Applications (1)

Country Status (8)

Families Citing this family (46)

Family Cites Families (12)

• 2000
  • 2000-12-08 FR FR0015998A patent/FR2817847B1/fr not_active Expired - Lifetime
• 2001
  • 2001-12-04 CN CNB018230849A patent/CN1240482C/zh not_active Expired - Lifetime
  • 2001-12-04 US US10/416,873 patent/US6938798B2/en not_active Expired - Lifetime
  • 2001-12-04 JP JP2002547637A patent/JP3940079B2/ja not_active Expired - Lifetime
  • 2001-12-04 WO PCT/EP2001/015408 patent/WO2002045866A1/fr active Application Filing
  • 2001-12-04 EP EP01986949A patent/EP1339501B1/de not_active Expired - Lifetime
  • 2001-12-04 AU AU2002238494A patent/AU2002238494A1/en not_active Abandoned
  • 2001-12-04 DE DE60141345T patent/DE60141345D1/de not_active Expired - Lifetime

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